1 Reduceţi termenii asemenea: a) 3a+7b-1,5a-2,8b; c) 2x²y-0,5y³x²+x-2x³y²; 4 b) -8x-3+7y+4x-6y+1; 2 3 d) a +36-²ab +/-ab+4-1. 10 5 5 5​